JP3246070U - dumbbell - Google Patents

Abstract

An object of the present invention is to provide a dumbbell having a function of easily changing the weight of a weight plate. [Solution] A dumbbell includes a dumbbell rod 100 and a pedestal 200, the dumbbell rod is provided with two semicircular screw rods, and the two semicircular screw rods are attached in reverse rotation. 2 sets of reverse threads are formed on the surface, connection holes are provided in the center of the pedestal, which are attached to both ends of the dumbbell rod, a weight plate 300 is provided on the outside of the pedestal, and a toothed plate is provided on the pedestal. A disc is provided, the toothed disc is fixed to the dumbbell rod, a nut is provided in the center of the toothed disc and fixedly connected to the toothed disc, the nut is connected to a semicircular screw rod, and the toothed disc is fixed to the dumbbell rod. The weight of the weight plate is adjusted by driving two semicircular screw rods to expand and contract as the device rotates. [Selection diagram] Figure 1

Description

The present invention relates to the field of dumbbell technology, and specifically relates to dumbbells.

Dumbbells are a traditional exercise equipment loved by many fitness people, but because the weight of traditional dumbbells cannot be easily changed, fitness people use different weights to meet different weight demands. It is necessary to purchase multiple dumbbells, which causes problems such as high purchase cost and disadvantages in storage.

This invention solves problems such as the fact that the weight of conventional dumbbells cannot be easily changed, so it is necessary to purchase multiple dumbbells of different weights, which is expensive and disadvantageous for storage. , the purpose of which is to provide dumbbells.

In order to achieve the above object, the present invention provides the following technical means.
A dumbbell, comprising a dumbbell rod and a base,
The dumbbell rod is provided with two semicircular screw rods, and the two semicircular screw rods are installed in reverse rotation, and two sets of screw rods are attached to the surfaces of the two semicircular screw rods. A reverse thread is formed,
A connection hole is provided in the center of the pedestal, which is attached to both ends of the dumbbell rod, a weight plate is provided on the outside of the pedestal, a toothed disc is provided in the pedestal, and the toothed disc is connected to the dumbbell rod. A nut fixedly connected to the toothed disk is provided in the center of the toothed disk, and the nut is connected to a semicircular screw rod, and as the dumbbell rod rotates, the two semicircular screw rods The weight of the weight plate is adjusted by driving it to extend and contract.

Further, a semicircular groove is provided in the center of the semicircular screw rod, a center hole is formed in the center by combining the two semicircular screw rods, and a center rod is provided in the center hole. At the same time, yielding grooves are provided at the two ends of the axial center rod, and pins are provided in the yielding grooves.

Furthermore, a guide ring is provided at the end of the semicircular screw rod, and the guide ring is inserted into a guide pipe of a corresponding size, and at the same time, the guide pipe is fixedly connected to the center of the fixed bracket, and the fixed bracket is attached to the pedestal. A pin hole is provided in the fixing bracket to pass through the guide pipe, and the pin passes through the pin hole and the yielding groove to support the linear expansion and contraction movement of the semicircular screw rod.

Furthermore, a ring is provided on the outer periphery of the connection hole, and a first restriction bar is provided at the bottom of the ring, which corresponds to a second restriction bar installed at the bottom of the toothed disc, and at the same time a round ring is provided on both sides of the connection hole. A pipe is provided, and the round pipe is provided with a spring and a ball, and a part of the ball is pushed into the ball groove of the toothed disc by the spring.

Furthermore, one side of the toothed disk is provided with convex teeth, and the other side is provided with numbers, which are visible through a window cut into the base.

Further, a lock body is provided at the bottom of the base, and a lock pin is provided on the lock body, and the toothed disk can be locked by fitting the lock pin with the convex teeth.

Furthermore, the end of the dumbbell rod is the connection area, the stopper ring, the bearing and the fixing bolt are installed in sequence, the pedestal is tightly fitted to the bearing, rotates relative to the dumbbell rod, and the end of the connection area A fixing groove is provided.

Further, the toothed disk is screwed into the fixing piece, and the fixing piece is provided with a fixing pin, and the fixing pin is inserted into the fixing groove to fix the toothed disk and prevent it from loosening and coming off.

Further, there is provided a center hole cover plate threaded onto the outside of the base, and the center hole cover plate is connected to the weight plate.

Furthermore, the dumbbell further includes a dumbbell storage rack, and the dumbbell storage rack is provided with a lock base.

The present invention provides the beneficial effects of dumbbells.
The dumbbell rod is equipped with two semicircular screw rods, and the semicircular screw rod is installed in reverse rotation, and the nut is fixedly connected to the toothed disc, and the toothed disc is fixed to the dumbbell rod. By rotating the dumbbell rod, the expansion and contraction of the two semicircular screw rods can be controlled, and the weight of the weight plate can be easily changed.

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings that need to be used in the embodiments of the present invention are briefly described below, and the drawings that are obvious and explained below are only These are only some embodiments of the present invention, and those skilled in the art can further obtain other drawings based on these drawings without any creative work.

1 is an exploded schematic diagram of a dumbbell and a dumbbell storage rack according to the present invention; FIG. FIG. 3 is a schematic exploded view of the dumbbell rod and the internal transmission structure of the dumbbell according to the present invention, viewed from the left side and from the right side. FIG. 2 is a schematic diagram of two semicircular screw rods of a dumbbell according to the present invention; FIG. 3 is a schematic diagram of a dumbbell fixing bracket according to the present invention; FIG. 2 is an exploded schematic diagram of a dumbbell base and a toothed disc according to the present invention; FIG. 3 is a schematic exploded view of the connection area of the dumbbell rod of the dumbbell according to the present invention; FIG. 3 is a schematic diagram of a dumbbell fixing piece according to the present invention. FIG. 2 is an exploded schematic diagram of a dumbbell weight plate according to the present invention.

In the description of this invention, terms indicating directions and positional relationships such as "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", and "outside" are used. The orientation or positional relationship shown in the drawings is only for the purpose of facilitating the explanation of the present invention and simplifying the description, and the referenced devices or elements are not shown in a particular direction or are configured or operated in a particular direction. It is understood that the invention is not intended to be shown or implied and cannot be considered as limiting the invention. Note that terms such as "first" and "second" are used only to explain the purpose, and cannot be understood as indicating or implying relative importance.

In the present invention, terms such as "attaching", "connecting to each other", "connecting", etc. should be understood in a broad sense unless specifically specified or limited. Those skilled in the art can understand the specific concepts of the above technical terms in the present invention according to specific situations.

Hereinafter, the drawings in the embodiments of the present invention are combined to clearly and completely explain the technical solutions in the embodiments of the present invention, and the obvious and described embodiments are not all embodiments, but the embodiments of the present invention. These are some examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative work fall within the scope of protection of the present invention.

As shown in FIGS. 1 to 3, in one embodiment of the present invention, a dumbbell includes a dumbbell rod 100 and a pedestal 200, and the dumbbell rod 100 is provided with two semicircular screw rods 101. A book semicircular screw rod 101 is attached in reverse rotation, two sets of reverse threads are formed on the surface, and a connection hole 201 is provided in the center of the pedestal 200, which is attached to both ends of the dumbbell rod 100. In addition, a weight plate 300 is provided on the outside of the pedestal 200, a toothed disc 202 is provided on the pedestal 200, and the toothed disc 202 is fixed to the dumbbell rod 100. A nut 203 fixedly connected to the disc 202 is provided, the nut 203 is connected to the semicircular screw rod 101, and the two semicircular screw rods 101 are driven to expand and contract according to the rotation of the dumbbell rod 100. Adjust the weight of the weight plate 300.

In the embodiment, the dumbbell rod 100 is a straight tube made of stainless steel or iron, and two semicircular screw rods 101 are attached inside, and the specifications of the two semicircular screw rods 101 are as follows. They are the same, and when installed in reverse rotation, two sets of reverse threads are formed, and both are installed at the same time in a shifted position, and the extending portions are screwed into the corresponding nuts 203, and the nuts 203 have teeth. It is fixedly connected to the center of the disc 202, and the toothed disc 202 is engaged with the end of the dumbbell rod 100, so that simply turning the dumbbell rod 100 clockwise or counterclockwise moves the nut 203 and connects it to the nut 203. The semicircular screw rod 101 can be controlled and moved.

In the embodiment, the pedestal 200 is in the shape of an inwardly concave disc, and a connection hole 201 is provided in the center of the pedestal 200, which is attached to both ends of the dumbbell rod 100, respectively, and a toothed disc 202 is inserted into the concave cavity 204. A weight plate 300 with a plurality of central holes is located on the outside of the pedestal 200, and the two semicircular screw rods 101 extend outward to the corresponding target central hole of the weight plate 300, You can get a weight plate with the weight you need, and you can easily change the weight of the dumbbells.

As shown in FIG. 2-5, a semicircular groove 102 is provided in the center of each of the two semicircular screw rods 101, and after assembling the two semicircular screw rods, one circular axis A hole 103 is formed, an axial rod 104 is provided in the axial hole 103, and the length of the axial rod 104 is the same as that of the semicircular screw rod 101 attached with a difference in length. It can prevent loosening and misalignment during movement.

In order to ensure that the axial rod 104 does not come off and to ensure that the semicircular screw rod moves linearly, yielding grooves 1041 are provided at both ends of the axial rod 104. A pin 105 is provided, and a guide ring 106 is fixedly connected to both ends of the two semicircular screw rods 101, and the guide ring 106 has a guide hole 1061 having the same size as the shaft hole 103. At the same time, the guide ring 106 is inserted into the guide pipe 2051, and the pin hole 2052 penetrating the guide pipe 2051 is provided. By passing the pin 105 through the pin hole 2052 and yielding groove 1041, the shaft core rod 104 is prevented from falling off, and loosening caused by the rotation of the nut 203 when moving outside the semicircular screw rod 101 is restricted. can do.

Here, the guide pipe 2051 is fixedly installed in the center of the fixed bracket 205, the fixed bracket 205 is screwed and attached to the pedestal 200, and the pedestal 200 is attached to the connection areas 120 at both ends of the dumbbell rod 100, and the connection is made. The diameter of the region 120 is slightly smaller than the diameter of the central region of the dumbbell rod 100, and the stopper ring 121, bearing 122, and fixing bolt 123 are sequentially installed, and the diameter of the inner ring hole of the stopper ring 121 is slightly smaller than the diameter of the central region of the dumbbell rod 100. The fixing bolt 123 is fastened to the screw 124 in the connection area 120 to avoid the pedestal from falling off, and at the same time the connection hole 201 of the pedestal is tightly fitted into the bearing 122 to rotate the dumbbell rod. By ensuring rotation relative to the pedestal, friction can be reduced.

As shown in FIGS. 2 and 6-7, the toothed disc 202 and the fixing piece 206 are screwed together, and the fixing piece 206 is divided into two halves to facilitate installation, and the fixing piece 206 is divided into two equal parts and inserted into the inner hole of the fixing piece. Two upper and lower fixing pins 2061 are provided, and the fixing pins are inserted into the fixing groove 125 at the end of the connection area of the dumbbell rod, so that the toothed disc and the dumbbell rod rotate synchronously.

As shown in FIGS. 2 and 5, the concave cavity 204 of the pedestal is provided with a ring 208 smaller than the diameter of the toothed disc, located on the outer periphery of the connection hole, and at the same time the outer surface of the concave cavity of the pedestal. A window 209 is provided on the outer circumference of the concave part of the toothed disc in order to know that the concave part of the toothed disc is fitted into the ring 208 and the semicircular screw rod is moved to the corresponding weight plate. Marks with numbers 2021 at regular intervals, for example, 1, 2, 3, 4, etc. ．． ．． Each number represents the number of weight plates, and each time the number of weight plates is increased or decreased, the corresponding number 2021 is displayed in the window 209, so that the required weight can be clearly known.

Furthermore, a first limit bar 2081 is provided at the bottom of the ring 208 and at the same time a second limit bar 2024 is provided at the bottom of the concave surface of the toothed disc, and the first limit bar 2081 is connected to the second limit bar 2024. When they come into contact, it indicates that the two semicircular screw rods 101 have expanded and contracted to the limit position, and the dumbbell rod continues to be rotated strongly to avoid damaging the dumbbell.

Further, round pipes 207 are provided on both sides of the connection hole 201, specifically, the round pipe 207 is located in the area between the ring and the connection hole, and a spring 2071 is attached to the round pipe 207, and the spring 2071 is attached to the round pipe 207. A ball 2072 is attached to the tail, and correspondingly ball grooves 2025 are provided, which are uniformly distributed on the inner circumference of the concave surface of the toothed disc, and after assembly, a part of the ball 2072 is attached to the ball by a spring. It is pushed into the groove 2025. Here, the spacing distance between the ball grooves and the spacing distance between the numbers are the same, so when you turn one number, the ball moves to transform one ball groove, thus creating a resisting force on the toothed disc. Increased and easier to position better.

As shown in FIG. 5, a lock body 210 is provided at the bottom of the pedestal 200, a stopper seat 211 is provided at the top of the lock body 210, a lock pin 212 is attached inside the lock body 210, and a spring groove is provided in the lock pin 212. 2120 is provided, at the same time a support rod 2121 is provided at the bottom thereof, a lock spring 2122 is provided on the support rod 2121, at this time, the lock spring 2122 is provided between the stopper seat 211 and the support rod 2121, and at the same time the spring A lock groove 2123 is provided on the groove 2120, a convex tooth 2026 provided on one side of the toothed disc 202 can freely pass through the lock groove 2123, and a lock bolt 2124 is provided on the lock groove; In addition, in order to easily fit the lock bolt, the size of the lock bolt 2124 is smaller than the convex tooth gap 2023, and at the same time, a restricting piece 2125 is provided on the lock bolt 2124, and the size of the restricting piece 2125 is smaller than the convex tooth gap 2023. Large size to prevent lock bolt from coming off.

As shown in FIG. 8, in the embodiment, a screwed center hole cover plate 213 is provided on the outside of the pedestal 200, and at the same time, a first mounting position 2131 in an upside down direction is provided on the outside of the center hole cover plate 213. provided, a first connector 2132 is provided in the upper position, a second connector 2133 is provided in the lower position, and similarly, a second attachment position 3011 is provided on the central plate 301 of the weight plate 300, A corresponding third fitting 3012 is attached to the second attachment position 3011, and a second attachment position 3011 is likewise provided on the end plate 302 of the weight plate, and a fourth fitting 3021 is attached above. , a fifth connector 3022 is attached below, and by inserting the center hole cover plate and each weight plate into each other, it is easy to insert and remove from above.

As shown in FIG. 1, in order to easily store dumbbells, a dumbbell storage rack 40 is provided, and two horizontal bars 41 in the center are used as a framework, and baffle plates 42 are provided at both ends of the rack. A sixth connector 46 combined with the fifth connector 3022 is provided below the dumbbell to prevent the placed dumbbell from coming off, and at the same time, between the two baffle plates 42, the dumbbell storage rack 40 can be stabilized. Two reinforcing members 43 are provided to strengthen the strength, a locking base groove 44 is provided at the bottom of the reinforcing member 43, a locking base 45 is installed in the locking base groove, and when the dumbbell is placed in the dumbbell storage rack, the locking The base 45 pushes up the lock pin 212, and at the same time the lock bolt 2124 retreats from the convex tooth gap 2023. At this time, the toothed disc is unlocked, the dumbbell rod 100 is rotated, and the semicircular screw rod 101 is moved to the required weight. It can be controlled to expand and contract to the position of the plate 300, and when the dumbbell is lifted, the lock pin 212 is returned by the elastic force of the lock spring 2122, the lock bolt 2124 is fitted into the convex tooth gap 2023, and the toothed disc to prevent the weight plate from rotating relative to the dumbbell rod.

Although the present application has been described in detail with reference to the above embodiments, those skilled in the art will understand that the technical means described in each of the above embodiments can still be modified or parts thereof can be equivalently replaced. Will. These modifications and substitutions do not deviate the essence of the corresponding technical means from the scope of the technical means of each embodiment of the present application.

Claims (10)

A dumbbell, comprising a dumbbell rod and a base,
The dumbbell rod is provided with two semicircular screw rods, and the two semicircular screw rods are attached in reverse rotation, and two sets are attached to the surfaces of the two semicircular screw rods. A reverse thread is formed,
A connection hole is provided in the center of the pedestal, the connection hole is attached to both ends of the dumbbell rod, a weight plate is provided on the outside of the pedestal, a toothed disc is provided in the pedestal, and the toothed disc is provided with a weight plate on the outside of the pedestal. a toothed disc is fixed to the dumbbell rod, a nut fixedly connected to the toothed disc is provided in the center of the toothed disc, the nut is connected to the semicircular screw rod, and the rotation of the dumbbell rod The dumbbell is characterized in that the weight of the weight plate is adjusted by driving the two semicircular screw rods to expand and contract in accordance with the movement of the two semicircular screw rods. A semicircular groove is provided in the center of the semicircular screw rod, a axial center hole is formed in the center by combining the two semicircular screw rods, and an axial center rod is provided in the axial center hole. 2. The dumbbell according to claim 1, wherein the two ends of the axial rod are provided with yielding grooves, and the yielding grooves are provided with pins. A guide ring is provided at the end of the semicircular screw rod, the guide ring is inserted into a guide pipe of a corresponding size, the guide pipe is fixedly connected to the center of the fixed bracket, and the fixed bracket is connected to the pedestal. and the fixing bracket is provided with a pin hole passing through the guide pipe, and the pin passes through the pin hole and the yielding groove to support the linear expansion and contraction movement of the semicircular screw rod. The dumbbell according to claim 2, characterized in that: A ring is provided on the outer periphery of the connection hole, and a first restriction bar is provided at the bottom of the ring, which corresponds to a second restriction bar installed at the bottom of the toothed disc, and round pipes are provided on both sides of the connection hole. 2. The dumbbell according to claim 1, wherein a spring and a ball are provided inside the round pipe, and a portion of the ball is pushed into a ball groove of a toothed disc by the spring. 5. The dumbbell according to claim 4, wherein one side of the toothed disc is provided with convex teeth, the other side is provided with numbers, and the numbers are visible through a window cut in the base. A locking body is provided at the bottom of the pedestal, a locking pin is provided on the locking body, and the toothed disk can be locked by fitting the locking pin with a convex tooth. The dumbbell according to item 5. The end of the dumbbell rod is a connection area, a stopper ring, a bearing, and a fixing bolt are sequentially attached, the pedestal is tightly fitted to the bearing, rotates relative to the dumbbell rod, and the connection area is connected to the end of the dumbbell rod. The dumbbell according to claim 1, characterized in that a fixing groove is provided at the end of the dumbbell. The toothed disc is screwed into a fixing piece, the fixing piece is provided with a fixing pin, and the fixing pin is inserted into a fixing groove to fix the toothed disc and prevent it from loosening and coming off. The dumbbell according to claim 5, characterized in that: 8. The dumbbell according to claim 7, further comprising a center hole cover plate screwed onto the outside of the base, and the center hole cover plate is connected to a weight plate. The dumbbell according to claim 1, further comprising a dumbbell storage rack, wherein the dumbbell storage rack is provided with a lock base.

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